Relief map duplicating machine



Jan- 5, 1937. J. J. BRAUND RELIEF MAP DUPLICATING MACHINE FiledvFeb. 17, 1956 5 Sheets-Sheet 1 fl 0 l. n e n I Jan. 5, 1937. J. J. BRAUND 2,066,555

RELIEF MAP DUPLICATING MACHINE v Filed Feb. 17, 1956 5 Sheets-'Sheet 2 R gg lnvenlor w ef'aizaz f fazeiz v- ,q By z ad J. J. BRAUND v RELIEF MAP DUPLICATING MACHINE Filed Feb. 1'7,` 1936 5 Sheets-Sheet 5 *ls v0 Q fan Jrazazdf/ Jan. 5, 1937.

. Jan. 5, 1937.

J. J. BRAUND 2,066,555

RELIEF MAP DUPLIGATING MACHINE .Filed Feb. 17, 1956 5 Sheets-Sheet 4 Attorneys `Ian. 5, 1937.

J, J. BRAUND RELIEF MAP DUPLICATING MACHINE 5 Sheets-Sheet 5 Filed Feb. 17, 1936 Inventor and A Harney S Patented Jan. 5, 1937 UNITED STATES PATENT OFFICE 13 Claims.

This invention relates to relief map duplicating machines.

It has been diiiicult heretofore to produce accurate and cheap metallic relief maps due to the fact that former embossing operations caused a continuous reduction in thickness in the sheet metal blank from the highest to the lowest point of elevation on the map. Such action caused a rupturejin weak sheets and required a maximum of ductility in the sheet which later would become disilgured from dents and scars from knocks and blows in the ordinary wear and tear of usage. In my method of embossing disclosed in Patent 1,866,448 issued July 5, 1932, I was successful in producing metal relief maps for models which reduced the thickness of the sheet metal blank only between one contour line of elevation and the next succeeding contour line of elevation thereby eliminating the necessity of continuously reducing the thickness of the metal from the lowest to the highest point of elevation.

In the apparatus of the present invention I emboss the sheet metal blanks by a similar step,

by step method beginning at the lowest contour J line of elevation and progressively pressing the sheet metal blank to the next succeeding contour line of elevation until the highest elevation is reached. a

`I accomplish this progressive pressing of the sheet metal blank in successive steps from one contour line of elevation to the next succeeding contour line of elevation by the use of hydraulic pressure pressing the sheet metal blank against a matrix prepared from a model made on my embossing machine shown in Patent.2,029,651 issued February 4, 1936.

I am aware of prior patents which use hydraulic pressure to press sheet metal blanks against a die or matrix but these patents allow a certain amount of creepage in the entire area of the metal sheet which would destroy the accuracy in making relief maps by these machines. Prior to insertion in my machine one face of the at sheet metal blank is colored and contour lines of a contrasting color are applied which lines indicate different levels of elevation. This motif or design may be applied to the metal sheet by printing or other customary methods. The motif or design of the contour on the metal sheet to be accurate must register with corresponding parts on the matrix and any distortion of my sheet would be fatal to accurate results.

It is the aim of the present invention to construct a machine for duplicating relief maps formed of sheet metalblanks by hydraulic pres- (Cl. lOl-3) sure having a relatively wide joint between the movable matrix carrying member and the stationary pressure reservoir, which provides an effective seal between the member and reservoir, that supports the exible diaphragm ram and the sheet in a manner to prevent the sheet from creeping; and to further provide in the joint a design which causes gripping action to set up stresses and strains only in the margin of the metal sheet to be embossed which stresses and strains are set up in a direction from the outside inwardly thereby leaving the free inner area of the metal sheet without stresses and strains that are likely to distort the design or motif and destroy the accuracy of the finished map.

Another feature of the present invention is the 15 construction of the parts of the machine which does not require the hydraulic reservoir to be drained each time a metal sheet is embossed and that enables an increase in the number of maps produced.

Further objects of the invention are to provide for centering the sheets accurately in the machine; for embossing one or more maps in the one operation; that requires very little skill to operate; that costs very little to operate and maintain in repair; and that is comparatively inexpensive to manufacture.

With the foregoing and other objects in view the invention consists of a novel combination construction and arrangement of parts as will be hereinafter more speciiically described and illustrated in the accompanying drawings, wherein is disclosed an embodiment of the invention but it is to be understood that changes, variations, and

modifications may be resorted to without departing from the spirit of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the 40 several views:-

Figure 1 is a side elevational.' the relief map duplicating machine in accordance `with the present invention and showing the parts in closed relation when embossing a metal sheet.

Figure 2 is an end elevation thereof also showing the parts in closed relation. f

Figure 3 is a fragmentary detailed central longitudinal vertical section thereof looking in a di- 5 rection toward one side of the machine.

Figure 4 is a top plan view of the reservoir member having a part of the diaphragm ram broken away and looking from a horizontal plane through the operating shafts, guide posts and 55 lockinglinks which latter parts are shown in horizontal section.

Figure 5 is an enlarged fragmentary vertical section through the matrix carrying member and the reservoir member in open position taken on a plane off the longitudinal center.

Figure 6 is a. view similar to Figure 5 taken on the longitudinal center and showing the sheet centering pins.

Figure 7 is a view similar to Figure 6 showing the parts in closed position with the metal sheet in gripped relation. i

Figure 8 is a horizontal section through a stand taken substantially on the plane of line 8-8 of Figure 1.

Figure 9 is a top plan view of the matrix frame assembled on a table prior to casting the matrix from the model and showing the frame arranged with a partition bar to make two matrices.

Figure 10 is a longitudinal vertical section through the table and frame substantially on the plane of line I Il-I 0 of Figure 9 showing the model in position and the matrix cast and without the partition bar.

Figure 11 is a detailed vertical section through the matrix frame and table after the matrix has been cast and taken substantially on the plane of line II-II of Figure 9.

Figure 12 is a fragmentary top plan view of the matrix frame showing the centering lug in position.

Figure 13 is an enlarged exploded perspective view of a portion of the matrix frame and centering lug.

Figure 14 is a fragmentary exploded planvview of a side rail of the matrix frame and an end of a partition bar.

Figure 15 is a perspective view o1 an end of thel partition bar shown in Figure 14.

Figure 16 is the top plan view of the sheet metal blank as it is inserted in the machine prior to the embossing operation and showing the motif or design applied to the upper face thereof.

In the beginning the structure and method of preparing the matrix will be described. The table top on which the matrix is cast is a flat steel panel I8 supported on end leg I9 and intermediate T- shaped cross braces 20. The end legs I9 are arranged to permit a portion of the table top I8 to extend outwardly of the legs. Table top I8 is rectangular in configuration.

The sheet metal hmodel 2| is first embossed with the contours indicating the various elevations in the area of the earths surface to be reproduced on my embossing machine shown in Patent 2.029,- 651 issued February 4, 1936. In the margin at each end of the model 2| holes are punched along the longitudinal median of the model and these holes are slipped over upstanding pegs 22 in the center at each end of the table top. Then on top of the model 2| around the margins thereof is placed the open rectangular frame 23a. The frame 23a will be hereafter designated the matrix frame. The frame is formedi with side rails 24 and end rails 25 joined together in any suitable manner at the corner of the frame. Secured to the bottom of the side and end rails of the frame in any suitable manner is a flat metal bar Wider than the rail and the bar projects inwardly to form an anchoring foot 26. This foot 26 extends continuously around the rails of the frame as will be clearly seen by referring to Figures 9, l0, and 11 of the drawings. The iiat bar that forms the foot 26 rests about the margins of the model 2 I.

On the upper face of the side and end rails of the matrix frame 23a are spaced threaded openings 2'l to receive the stud bolts which anchor the matrix frame in the matrix carrying member of the duplicating machine as will hereafter appear. At spaced intervals to each side of the center each end rail has the upper face formed with small sockets 28. The frame 23a is clamped in position on the table top I8 over the model 2| by lugs 29 having teats 30 seating in the sockets 2B. The lugs 29 are iixed to the table top I8 by the bolts 3|.

The same pegs 22 that center the model 2| are used for centering the matrix frame 23a. For this purpose the center of each end rail 25 is formed with the guide channel 32. In the center of the inner wall of the channel 32 is a circular threaded recess 33. The vertical leg 34 of an angular centering lug ts snugly in the guide channel 32. 'I'he vertical leg 34 has an opening 35 which registers with the threaded recess 33 in the end rail and the centering lug is secured to the end rails by means oi a bolt 36 which engages with the threaded recess 3?. It will be noted that the recess 33 does not pass through the end rails of the frame because the matrix material might escape through this opening during the casting or molding operation. The horizontal leg 3l of the centering lug has an opening which registers with and fits over the upstanding pin 2l on the table. It will thus be seen that when the centering lugs are xed to the end rails and slipped over the pins 22 the frame and model 2| are both centered from the same points at the ends of the table top.

With the matrix frame assembled as heretofore y described over the model 2| on the table top I 8, the matrix is then formed. The matrix is indicated at 39. The matrix 39 is preferably made of a wax used in electro-plating and is well known in the art. 'Ihis wax of the matrix 39 is heated to make it fluid and then it is poured on top of the model 2| within the matrix frame 23a. When this electro-plating wax hardens it is resistant to crushing force and forms a very hard matrix suitable for the purposes of the present invention. Although the electro-plating wax is preferable the matrix may be made of hydraulic cement and poured on the model 2| where it is left to harden. Other compositions may be used in forming the matrix 39 which are suitable for casting purposes.

It will be seen that the anchoring shoe extends inwardly of the side and end rails of the matrix frame 23a and furnish suitable anchorage for the matrix 39.

It may be that it would be desired to make two or more maps in the one embossing operation in the duplicating machine. If such is desired the frame may be divided transversely and also longitudinally by partition bars having a flat Wide base 40 and a central vertical web 4| rising from the base. The wide base 40 shall rest on the margins of the small models inserted in the frame and provide a foot similar to that shown in 26 which extends around the side and end rails. The base 40, referring to Figure 15 terminates shor* web 4I so as to t between the side rails in event the partition bar is to extend transversely. In this event the opposite ends of the web 4I project beyond the ends of the base and rest upon the foot 26 on the side rails while a cleat 42 on each projecting end will seat in the recess or pocket 43 gitudinally. In this event a longer partition bar will be used. Furthermore, by providing pockets 44 in the center of a transverse partition bar like shown in Figure 9 of the drawings. the matrix frame 23a may be divided into four parts where four maps may be inserted and four diierent matrices cast and reproduced on the duplicating machine in the one operation.

In Figure 10 of the drawings the matrix 39 is cast or molded for a single relief' map,` that is, without having any partition bars assembled in the matrix frame 23a. After the matrix 39 is formed the clamping lugs 29 are removed whereupon the matrix frame 23a in which is securely anchored the matrix 39 may be lifted from the table free of the model 2| ready for insertion in the matrix carrying member of the duplicating machine as will hereafter appear. p

The relief map duplicating machine of thel present invention is in the nature of a hydraulic press and consists of a vertically movable matrix carrying member A and a stationary reservoir member B. The matrix carrying member moves up and down in a vertical direction with respect to the reservoir member. The metal sheet to be pressed or embossed by the machine ts between the two members A and B. The matrix carrying member A and the reservoir member B in the form shown are substantially rectangular in conguration and are of the same size. p

The reservoir member B forms a iluid tight water chamber 46 and the chamber has upstanding marginal walls. The end marginal walls are indicated at 46a and the side marginal walls are indicated at 46h. In cross section the marginal walls are substantially channel-shaped with the channel thereof disposed inwardly, and the parallel flanges disposed horizontally while the web is disposed vertically.

The bottom ange of the marginal walls has an inset lip on the inner edge to which is bolted as at 4l the flange about the margin of the bottom wall 48. The bottom wall 48 of the chamber is additionally supported by cross braces 49 at intermediate points the ends of which are secured to the side marginal walls 46h of the chamber 46.

To support the parts A and B a pair of end stands 50 have their upper ends bolted as at 5i to the bottom flange of end walls 46a. These stands 58 are of substantially the same width as the width of the reservoir member B.. On each side of each stand 50 there is an inwardly directed flange to which the ends of the side braces 52 are bolted as at 53.

Extending through the one end wall 46a of the water chamber 46 is an outlet or drain conductor 54. The inner end of the outlet conductor 54 extends inwardly into the water chamber 46 and has an elbow tting 55 on the confined end which is open at the top to allow water to drain through the outlet conductor. The top of the elbow fitting 55 terminates substantially flush with the top of the chamber 46 so that during the operation of the machine it is not nec-- essary to wait until all of the water drains from the chamber before embossing the next succeeding metal sheet. On the outlet conductor 54 is a Valve 56 which is opened and closed by a lever 51. The inlet conductor 58 extends into the water chamber 46 and leads from a hand pump whereby predetermined pressures may be applied in the water chamber 46. The inlet or supply conductor 58 terminates below the top of the elbow fitting 55 on the outlet conductor. While the machine is utilized with mater supplied to the chamber 46, it 'will be understood that any liquid will serve the same purpose as the water. A suitable pressure gauge 59 is mounted on a'side wall of the reservoir member B and is in communication with the water chamber 46. The pressure gauge 59 is arranged so that when the water in the chamber reaches the level of the top of the elbow fitting 55 the same will register zero. The gauge will register the amount of water pressure in the chamber 46 that is required to press the sheet metal blank as will hereafter appear.

The upper ange of the channel-shaped marginal side and end walls of the reservoir has the upper face formed with a pair of steps, the inner one of which is indicated at 66 and the outer one of which is indicated at 6I. Between the two steps is an inwardly and upwardly inclined shoulder 62. The steps extend continuously around the upper face of the marginal wall and the margins of a flexible diaphragm ram 62 rest upon the steps and shoulders as will be clearly understood by referring to Figures 3, 5, 6 and '7. The tread of the inner step 65 is higher than the outer step 6i. Continuously about the outer step is secured a at clamping rim 64. The clamping rim 64 holds the outer portion of the margin of the diaphragm ram 63 in clamped relation to the outer step 6I while the portion of the diaphragm that extends over the inner step 68 is free to be compressed and form a cushion to seal the joint between the matrix carrying member A and the reservoir member B. This rim 64 extends continuously about the marginal wall of the chamber 46. The clamping rim 64 is anchored to the marginal walls 46a and 46h by spaced stud screws 65, the shanks of which extend through openings in the clamped portion of the diaphragm 63. The heads of these stud screws 65 are countersunk in the flat top face of the clamping rim 64. Inwardly of the stud screws 65 in the top face of the rim and continuously thereabout is a semicircular recess in which seats the lower segment of the gripping member 66. The top face of the rim 64 is below the level of the upper face of the diaphragm ram 63 but the upper portion of the gripping member 66 is ush therewith so that when the metal sheet rests upon the diaphragm ram the outer portion thereof bears on the upper portion of this gripping member. The diaphragm ram 63 covers the water chamber 46 and forms a partition wall between the matrix carrying member A and the reservoir member B.

Inwardly of the gripping member 66 in each marginal wall at the end of the rservoir member B are upstanding centering pegs or pins 61 anchored in the clamping rim 64. These centering pins are at each end and along the longitudinal median of the reservoir member. It will thus be seen that continuously about the upper face of the marginal walls of the reservoir, member B the diaphragm ram 63 is clamped by the continuous rim 64 which rests on the lower outer step 6|, and continuously about the rim is the round gripping member 66.

The movable matrix carrying member A includes vertical depending marginal walls the end ones of which are indicated at 61 and the side ones indicated at 68. These side and end marginal walls are substantially channel-shaped in cross section with the channel directed inwardly. The upper ilanges 61a of these marginal walls are materially wider than the lower flanges 81h thereof and the upper flanges have an inwardly directed lip thereon to which a flange of the top wall 69 is bolted as at 10. Having the upper anges of the marginal walls of the matrix carrying member wider than the lower flanges allows the matrix frame to be coupled when the parts are in open relation. 'I'he side and end rails 24, 25 respectively of the matrix frame 28a carrying the matrix 39 are bolted respectively to the side and end marginal walls of the matrix carrying member by the stud bolts 1|, the inner ends or' which engage in the threaded openings 21 on the matrix carrying frame. When the matrix carrying frame 23a is assembled in the matrix carrying member A, the lower portions of the frame bear against the inner edge of the bottom flange 61h as is clearly shown in Figure 5 of the drawings. The bottom face of the flat bar that forms a foot 26 for the matrix frame is flush with the lower face of flange 61h on the marginal wall of the matrix carrying member. In the lower face of the flange 61h on the marginal walls of the matrix carrying member is a continuous groove 12 which is in alignment with the continuous gripping member 66 about the upper face of the marginal walls of the reservoir member B.

The top wall 69 of the matrix carrying member A is braced transversely of the machine intermediate its ends by T-shaped braces 13 the ends of which are secured to the upper portions of the side marginal walls 68. When the matrix carrying frame 23a carrying the matrix 39 is assembled in the member A, the top of the matrix bears against the top wall 69 and is supported thereby. Small spaced orifices 14 are formed in the matrix 39 and these orifices register with like orifices 14a in the top wall 69 to allow any air compressed behind the sheet metal plate to escape. The orifices 14 in the matrix 39 may be drilled or otherwise formed to register with the orices in the top wall 69 after the matrix frame is assembled in the matrix carrying member A.

To raise and lower the matrix carrying member A there is a manually operated drive shaft 15 arranged horizontally below the reservoir member B. An outwardly projecting journal bracket 16 is bolted as at 11 to each end stand 50. 'Ihe drive shaft 15 has a portion thereof adjacent |each end journaled in a vertical portion 16a.of these brackets. One end of the drive shaft 15 outwardly of the upstanding portion of one bracket 16 has a hand wheel 11 fixed thereto so that the shaft may be rotated in either direction.

vIntermediate portions of the drive shaft are journaled as at 18 in the upper portion of each stand and there is a collar 19 on the drive shaft bearing against each stand to prevent lateral thrust in the drive shaft.

'I'he smooth reduced lower portions 80 of vertical shafts, one at each end of the machine and are journaled in bearing blocks 8|. 'I'he lower end of each of the vertical shafts is journaled in a horizontal portion 1Gb of veach bracket 16 as at 82. Fixed to the vertical shaft between the bearing block 8| and the horizontal ledge 16h bf the brackets 16 are spur gears 93 which mesh with worm gears 8l on the drive shaft 15 whereby the vertical shafts are rotated. The upper portion of the vertical shafts are formed with screw ithreads 85 and these threads mesh with a threaded bore 86 on bearing block 81 carried by end marginal walls 61' of the matrix carrying member A. It will thus be seen that when the drive shaft 18 is turned one way or the other a matrix carrying member A will be raised or lowered with respect to the reservoir member B. 'I'he journal blocks 8| are eachy bolted as at 88 to the end marginal walls 46a of the reservoir member B, while the bearing blocks 81 are bolted to the corresponding walls in the matrix carrying member A. I'o take up lateral thrusts between the raising and lowering of the matrix member A there are mounted a pair of guide posts 9| mounted adjacent each end of the machine and spaced from the side wall. The lower ends of the guide posts 9| are anchored to a pair of laterally extending brackets 92 bolted as at 93 to the outside of one marginal side wall of the reservoir member B as is shown in Figure 4 of the drawings. Intermediate portions of the guide posts 9| slide in brackets 94 bolted as at 95 to the corresponding one side of the matrix carrying member A.

In closed relation the matrix carrying member A and the reservoir member B are adapted to be locked together to insure a tight seal between the confronting marginal walls of the members. For this purpose on each side wall of the matrix carrying member in transverse alignment with each other are the keeper cleats 98 that project outwardly. In the upper face of each keeper cleat is a recess in which seats one end of a rectangular locking link 91. The other end of the locking link 91 is rotatable in an intermediate portion of an elongated handle 98 eccentric to the pivot, one end of which is rotatable on a pin 99 and this pin is supported between spaced ears secured to the outer face of the side marginal walls of the reservoir member B. The inner end of the'operating lever 98 is journaled on the pin 99 between the ears |00. It will thus be seen that by swinging the lever 98 from the position shown in Figure 2 of the drawings the links 91 will be raised out of the keeper groove on the cleats 96 thereby permitting the matrix carrying member A to be moved to open position when the link 91 is swung outwardly.

1n Figure 16 of the drawings is shown one of the ilat ductile, sheet metal blanks as they are inserted in the machine. 'I'he upper face of the metal blank has a motif or design laid out thereon as at |0| whichcorresponds with the motif or design on the matrix 89 carried by the matrix member A of the machine. It will be noted that y no motif is laid out on the margins |02 of the sheet metal blank because these margins are gripped by the joint between the marginal walls of the matrix carrying member A and the reservoir member B. Along the longitudinal center at each end of the sheets are openings |03 which register with the centering pins 61 on the rim 64- that holds the diaphragm ram 83 in clamped position. When the matrix carrying member is raised to open position the fiat sheet with the motif is placed on the rubber diaphragm ram 63 with the pins 61 extending through the openings |08. In the lower face of the flange 61b of the marginal end wall 61 of the matrix carrying member A there is a socket |04 to receive the free projecting upper end of the pin 61 when the member A is lowered. As the member A is lowered to operative position against the sheet metal blank C, the lower face of the marginal wall of member A bears first on that portion of the strains and stresses set up by the gripping action will be from the outside inwardly of the joint and the free inner portion of the sheet will be without stresses or strains for this -reason. As the parts are further brought together the gripping member 66 causes the margin of the sheet C to be gripped in the corresponding groove 'l2 where it is held in tight gripping relation so that there will be no creepage in the metal sheet C. It will thus be seen that the construction of the 'joint between the marginal portions of the member A and the member B effects a tight seal at the inner step 60 because of the resiliency of the rubber diaphragm ram clamped between them and also effects a positive gripping action on the metal sheet C when the gripping member 66 forces the margin of the sheet into the groove 12.

When the parts are in closed position water or other liquid is forced into the chamber 46 through the inlet pipe 58 whereupon the diaphragm ram presses the metal sheet upwardly against the matrix and forms the irregular contour es depicted in the motif or design Illl on the sheet. It will be understood beforehand that the particular motif IUI is reproduced in counter part on the lower face of the matrix 39.

Having described my invention, what l'. claim is:-

1. A relief map duplicating machine comprising a stationary reservoir member equipped with a controlled liquid supply and outlet, a hollow vertically movable matrix carrying member adapted to cooperate with the reservoir member to emboss a metal sheet, the margin of the reservoir member confronting the matrix carrying member formed with steps, a flexible diaphragm ram forming a partition between the matrix carrying member and the reservoir member having the margins thereof disposed over the steps, diaphragm clamping means disposed over the diaphragm and anchored to the lower step, and co-acting means on the clamping means and the margin of. the matrix carrying member to grip a metal sheet while it is being operated upon by the machine.

2. A relief map duplicating machine comprising a stationary reservoir member equipped with a controlled liquid supply and outlet, a hollow vertically movable matrix carrying member adapted to cooperate with the reservoir member to emboss a metal sheet, the margin of the reservoir member confronting the matrix carrying member formed with steps, a flexible diaphragm ram forming a partition between the matrix carrying member and the reservoir member having the margins thereof disposed over the steps, diaphragm clamping means disposed over the diaphragm and anchored to the lower step, coacting means on the clamping means and the margin of the matrix carrying member to grip a metal sheet while it is being operated upon by the machine, and rotatable means journaled on the reservoir member and engageable with the matrix carrying member to move the latter with respect to the former.

3. A relief map duplicating machine comprising a stationaryreservoir member equipped with a controlled liquid supply and outlet, a hollow vertically movable matrix carrying member adapted to cooperate with the reservoir member to emboss a metal sheet, the margin of the reservoir member confronting the matrix carrying member formed with steps, a flexible diaphragm ram forming a partition between the matrix carrying member and the reservoir member having the margins thereof disposed over the steps, diaphragm clamping means disposed over the diaphragm and anchored to the lower step, co-acting means on the clamping means and the margin of the matrix carrying member to grip a metal sheet while it is being operated upon by the machine, rotatable means journaled on the reservoir member and engageable with the matrix carryingA member to move the latter with respect to the former, and a pressure gauge carried by the reservoir member to indicate the pressure in the machine when the parts are closed.

4. A relief map duplicating machine comprising a stationary reservoir member equipped with a controlled liquid supply and outlet, a hollow vertically movable matrix carrying member adapted to cooperate with the reservoir member to emboss a metal sheet, the margin of the reservoir member confronting the matrix carrying member formed with steps, a flexible diaphragm ram forming a partition between the matrix carrying member and the reservoir member having the margins thereof disposedvover the steps, diaphragm clamping means disposed over the diaphragm and anchored to the lower step, coacting means on the clamping means and a margin of the matrix carrying member to grip the metal sheet while it is being operated upon by the machine, rotatable means journaled on the reservoir member and engageable with the matrix carrying member to move the latter with respect to the former, a pressure gauge carried by the `reservoir member to indicate the pressure in the machine when the parts are closed, and co-acting locking means on the matrix carrying member and reservoir member to lock them together during the embossing operation.

5. A relief map duplicating machine of the character wherein a metal work sheet in position for operation is supported about the margin between a member carrying a matrix and a hydraulic pressure reservoir member the latter being closed by a flexible diaphragm ram constituting a support for th` "itermediate portions of the work sheet, and in combination, a joint between the member and reservoir member formed by equipping the upper face of the margin of the reservoir member with a step, the margin of the diaphragm ram disposed over the step and the work sheet to be operated upon resting upon the diaphragm, a rigid diaphragm clamping rim secured on top of the diaphragm on the lower step, and means carried by the clamping rim bearing on the work sheet and co-acting With means formed on the margin of the matrix carrying member to grip the work sheet while the work sheet is being operated upon by the machine.

6. A relief map duplicating machine of the character wherein a metal work sheet in position for operation is supported about the margin between a matrix carrying member and a reservoir member closed by a flexible diaphragm ram constituting a support for the intermediate portions of the metal sheet, and in combination, a joint between the member and the reservoir formed by equipping the upper face of the margin o f the reservoir member with a step, the margin of the diaphragm ram disposed over the step and work sheet to be operated upon resting upon the diaphragm, 'a rigid diaphragm clamping rim secured on top of the diapragm on the lower step, an upstanding tongue on the clamping rim, the matrix carrying member equipped with a correspondingly arranged groove on the margin to cooperate with the tongue, and the margin of the work sheet being gripped between the cooperating tongue and groove while the work sheet is being operated upon by the machine.

7. A relief map duplicating machine of the character wherein a metal work sheet in position for operation is supported about the margin between a matrix carrying member and a hydraulic pressure' reservoiri, member the latter being closed by a flexible diaphragm ram constituting a support for the intermediate portions of the Work sheet, and in combination, a `ioint between the member and reservoir member formed by equipping the upper face of the margin of the reservoir member with a step, the margin of the diaphragm ram disposed over the step and the Work sheet to be operated upon resting upon the diaphragm, a rigid diaphragm clamping rim secured on top oi' the diaphragm on the lower step, and means carried by the clamping rim bearing on the work sheet and coacting with means formed on the margin of the matrix carrying member to grip the Work sheet while the metal sheet is being operated upon by the machine, upstanding centering pins carried by the clamping rim adapted to extend through the work sheet, and said margin of the matrix carrying member formed with a socket to receive the pins so as to retain the sheet in centered position when the matrix carrying member is moved relative to the reservoir member.

8. A relief map duplicating machine of the character wherein a metal work sheet in position for operation is supported about the margin between a matrix carrying member and a reservoir member closed by a flexible diaphragm ram constituting a support for the intermediate portions of the metal sheet, and in combination, a joint between the member and the reservoir formed by equipping the upper face of the margin of the reservoir member with a step, the margin oi' the diaphragm ram disposed over the step and the Work sheet to be operated upon resting upon the diaphragm, a rigid diaphragm clamping rim secured on top of the diaphragm on the lower step, an upstanding tongue on the clamping rim, the matrix carrying member equipped with a correspondingly arranged groove on the margin to cooperate with the tongue, and the margin of the work sheet being gripped between the cooperating tongue and groove while the work sheet is being operated upon by the machine, upstanding centering pins carried by the clamping rim adapted to extend through the work sheet, and said margin of the matrix: carrying member formed with sockets to receive the pins so as to retain the sheet in centered position when the matrix carrying member is moved relative to the reservoir.

9. In combination with a relief map duplicating machine characterized by a hollow matrix carrying member, a marginal wall of the matrix carrying member formed with relatively wide and narrow anges arranged one above the other, a matrix carrying frame equipped with side rails, the lower portions of the side rails bearing against the narrow flange and the upper portions thereof bearing against the wide ange, and means carried by the wide flange to detachably secure the matrix carrying frame to the matrix carrying member.

10.l In combination with a relief map duplicating machine characterized by a hollow matrix carrying member, a marginal wall of the matrix carrying member formed with relatively wide and narrow anges arranged one above the other, a matrix carrying frame equipped with side rails. the lower portions of the side rails bearing against the narrow ange and the upper portions thereof bearing against the wide flange, means carried by the wide flange to detachably secure the matrix carrying frame to the matrix carrying member, and means on the opposed rails of the frame to center the frame while the matrix is being cast.

11. In combination with a relief map duplicating machine characterized by a hollow matrix carrying member, a marginal wall of the matrix carrying member formed with relatively wide and narrow flanges arranged one above the other, a matrix carrying frame equipped with side rails, the lower portions of the side rails bearing against the narrow flange and the upper portions thereof bearing against the wide flange, means carried by the wide flange to detachably secure the matrix carrying frame to the matrix carrying member, means on the opposed rails of the frame to center the frame while the matrix is being cast, and means carried by the said opposed rails to clamp the frame to a casting table to receive the matrix being cast therein.

12. In combination with a relief map duplicating machine of a matrix carrying member equipped with a depending ange defining a recess therein adapted to detachably receive a frame in which the matrix is cast, a reservoir member, a diaphragm ram forming a partition between the reservoir member and the matrix carrying member, a work sheet disposed on the diaphragm ram, clamping means carried by the reservoir member to secure the diaphragm ram, and coacting gripping means carried by the flange and the clamping means to anchor the work sheet while it is being operated upon.

13. A relief map duplicating machine comprising a reservoir member equipped with a controlled liquid supply and outlet, a hollow matrix carrying member adapted to cooperate with the reservoir member to emboss a metal work shee, one of said members being movable, a diaphragm ram carried by the reservoir member forming a partition between the members and at the same time providing a platform, a work sheet resting on the platform, clamping means carried by the reservoir member to secure the diaphragm ram, and coacting gripping means carried by the matrix carrying member and the clamping means f to anchor the work sheet while it is being operated upon.

JOHN J. BRAUND. 

